[squeak-dev] How to get a list of all plugins in VM

How do I find out what plugins my current VM was built with?  This is
about an already built VM, not VMMaker.

The closest I have found is
SmalltalkImage current listBuiltinModules
and listLoadedModules.
I believe that external, unloaded modules will not appear in either.

I'm trying to figure out if I'm setup so I can use some of the font
packages.  I'm running a 3.10 image (but 3.9 VM) on Linux (Debian
Lenny).

How do I get a list of all plugins?

On Mon, 2009-03-23 at 13:53 -0700, Ross Boylan wrote: On Linux you can find them in the same directory as the VM, something
like /usr/local/lib/squeak/3.10-1/ for example, which you can discover
by following the symlink you likely use to start Squeak
in /usr/local/bin/ or /usr/bin/ .

A way to do this in a more platform independent method would be nice.

Ken

Smalltalk listLoadedModules

Oops.  Sorry.  Post-prandial posting.  Forgive me.

Ross Boylan wrote:
> I'm trying to figure out if I'm setup so I can use some of the font
> packages.  I'm running a 3.10 image (but 3.9 VM) on Linux (Debian
> Lenny).
>
> How do I get a list of all plugins?

You don't. External, unloaded plugins can't be enumerated since they are
just platform shared libraries (DLLs). They could be found anywhere in
your search path which makes it very difficult to list them explicitly.

The right way to solve your problem is to provide an entry point in your
plugin that can be used to detect whether the plugin is available. A
useful thing to do here is to provide a primitiveVersion because later
on you'll be able to use that to detect whether the user has an outdated
plugin version. Then you can simply implement something like:

MyClass>>pluginVersion
        "Returns the plugin version, or nil if the plugin cannot be loaded"
        <primitive: 'primitiveVersion' module: 'MyPlugin'>
        ^nil "indicates failure"

MyClass>>isPluginPresent
        "Returns true if the plugin is present"
        ^self pluginVersion notNil

MyClass>>isPluginOfTheRightVersion
        "Returns true if the plugin is of the right version"
        ^(self pluginVersion ifNil:[0]) > self minimumVersion

Cheers,
   - Andreas

Andreas Raab wrote:
> MyClass>>pluginVersion
>     "Returns the plugin version, or nil if the plugin cannot be loaded"
>     <primitive: 'primitiveVersion' module: 'MyPlugin'>
>     ^nil "indicates failure"

...and out of curiosity - is there currently a way to "enumerate" these
entry points? That would probably be nice to have otherwise, some
convention.

regards, Göran

Göran Krampe wrote:
> Andreas Raab wrote:
>> MyClass>>pluginVersion
>>     "Returns the plugin version, or nil if the plugin cannot be loaded"
>>     <primitive: 'primitiveVersion' module: 'MyPlugin'>
>>     ^nil "indicates failure"
>
> ...and out of curiosity - is there currently a way to "enumerate" these
> entry points? That would probably be nice to have otherwise, some
> convention.

By "entry points" you mean primitives? If so, no, there isn't. The entry
points are regular library symbols and I don't think the platforms
provide a way of enumerating these.

Although, I will point out that (IIRC) Igor and Eliot have both
mentioned changing the plugin interface to export a list of symbols that
might be enumerable.

Cheers,
   - Andreas

On 24.03.2009, at 08:46, Andreas Raab wrote:

They are not only library symbols, but also held in an array ...

> Although, I will point out that (IIRC) Igor and Eliot have both  
> mentioned changing the plugin interface to export a list of symbols  
> that might be enumerable.


... and that array could easily be made accessible to a primitive I'd  
think.

- Bert -

On Tuesday 24 Mar 2009 2:23:31 am Ross Boylan wrote:
> I'm trying to figure out if I'm setup so I can use some of the font
> packages.  I'm running a 3.10 image (but 3.9 VM) on Linux (Debian
> Lenny).
>
> How do I get a list of all plugins?
Plugins are shared libraries packaged in the same directory as the executable:
$ dpkg -L squeak-vm
....
/usr/lib/squeak/3.10-3/AioPlugin
/usr/lib/squeak/3.10-3/B3DAcceleratorPlugin
/usr/lib/squeak/3.10-3/ClipboardExtendedPlugin
/usr/lib/squeak/3.10-3/DBusPlugin
/usr/lib/squeak/3.10-3/FileCopyPlugin
/usr/lib/squeak/3.10-3/GStreamerPlugin
/usr/lib/squeak/3.10-3/ImmX11Plugin
/usr/lib/squeak/3.10-3/KedamaPlugin
/usr/lib/squeak/3.10-3/KedamaPlugin2
/usr/lib/squeak/3.10-3/MIDIPlugin
/usr/lib/squeak/3.10-3/OggPlugin
/usr/lib/squeak/3.10-3/PseudoTTYPlugin
/usr/lib/squeak/3.10-3/RomePlugin
/usr/lib/squeak/3.10-3/Squeak3D
/usr/lib/squeak/3.10-3/SqueakFFIPrims
/usr/lib/squeak/3.10-3/UUIDPlugin
/usr/lib/squeak/3.10-3/UnixOSProcessPlugin
/usr/lib/squeak/3.10-3/VideoForLinuxPlugin
/usr/lib/squeak/3.10-3/XDisplayControlPlugin
...

Subbu